Concrete-block-molding machine.



E. ELLIN'GSON. I CONCRETE BLOOK MOLDING MACHINE.

APPLIUATION FILED TBB.17,1913. 1, 1 18,540. Patented Nov. 24, 1914.

3 SHEETB"3HEET 2.

6 z 6 L VVENTOR Allarney THE NORRIS PETERS CO. FHUTO-LITHQ. WAEMINGYUN.D. C

E. ELLINGSON.

CONCRETE BLOCK MOLDING MACHINE.

APPLICATION FILED PEB.17, 1913.

Patented Nov. 24, 1914.

3 SHEETS-SHEET 3.

nmumllllmTl 7 lNVE/VTOR IE NORRIS PEfERf- :0 PH'WOJ HMO. WASHING VON 11currn sra'rns rn rnnr OFFICE.

DAKOTA.

To all whom it may concern r a Molding Machines, of which the followingis a specification. d r a ThlS invention relates to concrete blockmoldmgmachmes, and relates more specifically toa machine of this typeadapted pare ticularly for the moldingor formmg of what is 1 generallytermed a a sectional block, that is, a molded concrete block which isformed of sections fixedly secured together, but so disposed withrelation to,

each other as to provide a continuous air space interiorly of thecompleted block,

The presentinvention is an improvement upon the device shown, describedand claimed in Letters Patent #951,723, granted to Joseph W. Bragstad onMarch ,8, 12110, and the present invention has for its ob ect manner asto render the device; more posito improve the operating means for manipr lating, the end cores of the mold, in such n tive in its action, andprevent any movement of the end sections of the core process of moldingthe block.

during the y In the drawings: F'gure 1 is a view in side elevation of aconcrete block molding and described in the patent above referred to, itis not believed Ineeessaryto illustrate machine in accordance with myinvention, the mold be ng, shown in closed position;

Fig. 2 is ajsimilar view of the machine, the

mold being shown in the opened position.

Fig. 3 is a top plan view of the machine with the mold in the closedposition. Fig. 4: is an ,end view of the machine with the supportinglegspartly broken away. Fig,

5 is a longitudinal sectional, viewof the machine withthe mold in theclosed position, and, Fig. 6, is a detailperspective view of one oftheend boards of the mold with its attached operating mechanism and alsoshowing more in detail the wear take-up,

mechanism. 1 v j d The; present invention, like the devlce shown inPatent #951,723 above referred to, employs a mold embodying side and endmembers, the side members being hinged to movefrom upright tosubstantially horir z0nta1'positions,and the end memberswhichSpecification of Letters Patent.

ELLINGELLINGSON, on cannon, sourrri. nario'rii, assrenon '10 ,BRAGSTADCONCRETE MACHINERY 00., INQ, or canron. some: mirrors, A CORPORATION orSOUTH CONCRETEELOGK-MOLDING MACHINE.

Patented Nov. 24, 1914. Application filed February 17,1913. SerialNo].748,911.

carry a part of the core for the complete block, being adapted to moveendwise of the machine toward and away from the center thereof. Certaindetails of construction: in

the machine shown in said Letters Patent: #951,723, and in myimprovement being, therefore in. common, detailed description of suchparts is deemed unnecessary, such de tailed description asisgivenfherein being directed substantially to the improvements.

As in the, patent above referred to, I pro- Patent#951,793 abovereferred to, side and end members are employed, the end mem herscarryingportions ofthe core, which portions of the core cooperate with avertically-momble core section to form the completed block. n n a In thepresent invention, like in the device shownin the patent above referredto, the,

end members of thejmoldjcarry core] sec tions which cooperate with avertically- As the manner 1n movable core section. WhlCll the anchorsthat secure the sections of the completed block fixedly together areplaced in position in the moldis fully shown or describe in detail suchfeature in the present invention.

Like in the patent above referred to, I

provideffor the mold, a pallet plate 12,, a

which itwill be understood is suitably aper tnred to accommodate thevertically movable core sections used in producing the block. Thispallet plate rests upon the bed] or base 10 and cooperates with the sidememe here 14. and the end members 15 to form the mold. The sidemembers14 in accordance with my invention arehinged at the oppo site sides ofthe bed or base plate to pintle, rods 16 ,which pass through the lowerends of thefribs 17 on said. side members and have their ends receivedin bosses 18 carried by the sleeves 19 that are adjustably mounted onstub shafts 20 carried by the side rails of thebase or frame.Thesesleeves 19 may be adjusted on the stub shafts 20 to increase ordecrease the space between the side members 14, being held in anadjusted position v thereof, and thus hold the side sections in uprightposition when the end sections are moved up to closed position. Inpractice,

' the adjustability of the clips or brackets 22 is easily effected bymaking these in the form ofan angle iron, one leg of which lies againstthe inner faces of the end sections, and the other leg of which engagesthe outer faces of the side sections, the end sections being providedwith a plurality of apertures 23 through one or the other of whichsecuring bolts are passed for fastening the clips to the end sections.

In Patent #951,723 heretofore referred to, a cable mechanism is employedfor open ing and closing the end members of the mold, and in practice,it has been found that these cables stretch or give, resulting at times1n an imperfectblock, the mold members, and particularly the end membersof the mold being unableto resist the strains imposed thereon resultingin an. untrue or imperfect block. To obviate this, isas heretoforestated, one of the main objects of 'ny invention, and I accomplish thisby means which will now be described specifically to theembodimentshown. Each end member 15 is provided on its outer face withbearings 24 in which is mounted a rock-shaft 25; the ends of whichextend beyond the respective bearings 24, and are connected with therespective ends of the base or bed, by a toggle lock, which when inclosed position, serves effectively to resist any movement of the endmembers of the mold. One of these toggle locks is .provided for each endmember 15 and each lock consists of a somewhat triangular bracket 26,the two arms of which are-coir nected at their free ends to the rockshaft 25, and at their outer or united ends, have adownwardly-projecting lug .27 which is pivotally connected by a weartake-up device with a bracket 28 mounted on the end of the base or bed10. Said wear take-up device as here shown consists of a socket 29pivotally-connected at its inner end to the lug 27 and having a threadedbore in its other end which receives one end of a right and left handthreaded screw 30, the other end of said screw 30 being received in thethreaded bore of a socket 31 which has its outer end pivotally connectedto the bracket 28. The screw 30 is operated in any suitable manner, asby forming the central portion thereof with flattened faces to receiveav spanner wrench, or by providing apertures in the screw to receive animplement, as is well-known in the arts. The socket member 31 isprovided on its upper face with a seat32 which receives anangularlyextending pin or projection 33 carried at the free end of alocking lever 34 which at its inner end is fixedly attached to thebracket 26. .The locking lever 34 constitutes a handle for breaking thetoggle joint to permit of the end members of the mold being movedoutwardly, and when the pin 33 is engaged in the seat 32, said lever 34-holds the toggle lock in locked position.

As in Patent .jji951,723, I employ cen tral core section 35 carried by arack 36 held against lateral movement during its operation by a braceguide 37. Said "central core section is operated by means 'of a toothedsegment-38 engaging the rack 36, as in Patent #951,723 referred to, saidsegment being mounted on a shaft 39 carried in hangers 40 attached tothe opposite side rails of the bed or base. The shaft 39 is operated tomove the segment by an operat-j ing lever 41 mounted 'on one end of saidshaft 39. At each end of the machine frame, I'provide, on each sidethereof, and underneath the bed or" base, supporting brackets 4201fsomewhat angular shapeyone end of each bracket being attached to theside rails of the bed or base, and the otherend of each bracket beingattached. to the supporting legs 11. These brackets constitute bearings,for cross-shafts 43, 43 at one end of the machine and similar shafts'44,

44 at the other end of the machine. Said crossshafts extend beyond thebrackets or bearings 42 at opposite sides of the machine, and at one endof the machine, on'both sides thereof, there-is'attached to therespectiveends of the shaft 43 the lower ends of levers 45, the upperends of which are pivotal'ly attachedto the outer ends of links 46,having their inner ends pivotally attached to the rock shaft 25 at theend of the machine. At the same end of the machine, on both sidesthereof,.there is attached to the ends of cross-shaft 43, the lower endsof levers" ends mounted on the the upper ends of links 52, (Fig. 5,).which however, mounted intermediate their ends on.

the ends of cross-shaft 44, so as to provide arms 48 depending below thecross-shaft 44. The lower ends of these arms 48 are pivoted as at 50 tothe lower ends of links 51 which have their other ends pivotallyattached to are mounted on the shaft 39. Pivotally con nected to theselinks52 are the inneror lower ends of levers 53, the outer or upper endsof which are pivotally connected as at 54 to the levers 47 intermediatethe ends of the latter. The upper portions of the levers 48 are mountedon the ends of the rock shaft carried by the end member 15 at one end ofthe machine in the same manner as the upper ends of levers 47 aremounted on the rock shaft 25 carried by the end member 15 at theopposite end of said machine. a

In Fig. 1 the tamper 55 is illustrated in position over the mold fortamping the material therein, but as the tamping mechanism per 86 is aseparate invention from that herein shown and described, it has not beenillustrated in detail. In said Fig. 1, the ma chine is shown with themold closed, ready to receive the material from which the block is to bemolded. When the block has been molded and set, and it is desired toremove the same, the operator throws lever 41 to the left as illustratedin Fig. 2, which operates shaft 39, causing segment 38 to move rack 36downwardly carryingthe central core 35 therewith. Through-theconnectionot the links 51, 52 and levers 53, with the levers 47 and48,at apposite ends of the machine, the toggle look, when locking levers34 are re leased, will assume the Fig. 2 of the drawings, moving the endmembers of the mold toward opposite ends of the bed or base, andallowing the side members 14 to open outwardly, so that the block;

In case it is desired to increase the size of the.

may be removed from the bed or base.

mold, a larger sized pallet plate is substituted, the side members 14are adjusted outwardly on the stub shafts 20, the holding clips 22 areadjusted to contormto the increased width between the side members, anda block of greater size thereby formed without other alteration oradjustment of the machine.

The toggle lock mechanism holding the end position shown in members ofthe mold secure in. their position, obviates. any necessity forproviding any locking means for the operating lever 41, necessitatingonly the operation of the locking levers 34,when it is desired tooperate the lever 41 to open the mold.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In a concrete-block forming machine, thecombination with a mold comprising side andend members, ofpositively-oper ating means for movingsaid end members toward or awayfrom the side members to open or close the mold, and means forconnecting said end members with their support andholding said membersin closed engagement with the ends of the sidemembers, comprisinganangular bracket having a deing of threaded bores, one of sald membersbeing pivotally-secured to said support, and the other to the machineframe and a right and left screw connecting said threaded mem bers, anda lever secured at one end to said bracket and provided at its free endwith a projection to engage one of the threaded members of the take-up.

2. In a concrete-block forming machine. the combination with a moldcomprising side and end members, positively-operating means foroperating the end members toward or away from the side members to openor close the mold, and means connecting said end members with theirsupport, and holding said members in closed engagement with the ends ofthe side members, comprising an angular bracket having a de pending.lug, and a take-up device having necting said parts adjustably, and alever secured at one end to said bracket, its opposite end having anangularly-projecting pin;

to engage the adjacent take-up member.

In testimony whereof I afiix my signature in presence of two witnesses.

ELLING ELLINGSON. Witnesses;

A. B. CARLSON, A. N. BRAGSTAD.

Copies otthis patent may be obtained for five cents each, by addressingthe. Commissioner of Patents.

Washington, D. G.

